BRITISH PLANT -GALLS 



A CLASSIFIED TEXTBOOK OF 

 CECIDOLOGY 



BY 



E. W. SWANTON 



MEMBER OF THE BBITI8H MYCOI.OQIOAI. SOCIETY, AND OF THE ASaOCIATION 



OE ECONOMIC BIOLOQISTS; CURATOR OF THE EDtJCATIONAL MUSEUM, 



HASLEMERE; AUTHOR OP "FUNGI, AND HOW TO KNOW THEM" 



WITH INTRODUCTION BY 



SIR JONATHAN HUTCHINSON 



F.R.C.S., D.SC, LL.D., F.R.S. 



AND 



SIXTEEN COLOURED PLATES 



BY 



MARY K. SPITTAL 



METHUEN & CO. LTD. 



36 ESSEX STREET W.C. 



LONDON 



